Hanna BL983320 Conductivity (EC) Controller (0.0 – 199.9 μS/cm)

Description

Technical Overview Of BL983320 Conductivity Controller

The Hanna BL983320 Conductivity (EC) Controller is a compact, panel-mounted process controller specifically designed for measuring electrolytic conductivity within a range of 0.0 to 199.9 μS/cm. This precision instrument serves environments requiring tight monitoring of water quality in applications such as ion exchange systems, reverse osmosis (RO) plants, distillation units, and deionized (DI) water systems. It enables operators to automatically or manually control dosing operations through an integrated dry-contact relay system which activates whenever the measured conductivity exceeds the defined set point. With its large LCD display housed behind a splash-resistant cover, the BL983320 ensures clear visibility of data even in demanding industrial conditions. The device’s architecture integrates fuse-protected dosing contacts rated up to 2A load, ensuring operational safety and compliance with industrial reliability standards. Measurement is stabilized via automatic temperature compensation between 5°C and 50°C, enhancing accuracy against environmental variations. Calibration is manual, performed with a dedicated CAL trimmer. The compact form factor with dimensions of 83 × 53 × 99 mm allows convenient panel integration across diverse setups.

Advanced Dosing Capability With Adjustable Relay Control

One of the most impactful features of the BL983320 is its adjustable dry-contact dosing relay. This relay is user-programmable to trigger at any chosen conductivity level up to the product’s maximum range of 199.9 μS/cm, making it adaptable for various process requirements. In automated mode, the relay instantly responds when conductivity exceeds its threshold, enabling direct activation of solenoids that control water flow between different DI tanks or valves that introduce lower EC water streams into target tanks. This function is particularly valuable in closed-loop water polishing systems, laboratory DI installations, and low-conductivity process flushing lines. The relay can also be toggled via a three-position control switch (OFF–AUTO–ON), allowing manual override—ideal for priming dosing pumps during maintenance. In manual mode (ON), operators gain precise control over relay activation without relying on conductivity readings, adding flexibility for troubleshooting and system calibration. Through these capabilities, the BL983320 offers both proactive and reactive process control, consolidating measurement and dosing into a single panel unit.

Safety And Overdose Protection Features Integrated

Operational safety within dosing systems is critical, and the BL983320 incorporates programmable overdose protection to prevent system damage or contamination caused by extended dosing beyond safe limits. The controller can be configured to deactivate its dosing relay if the set point is not reached within a user‑specified interval ranging from 5 to 30 minutes. This feature is vital for industries where overdosing with deionized water or RO water could affect downstream processes such as semiconductor manufacturing, pharmaceutical production, or laboratory analytics. A multicolor LED indicator further supports safety visibility. Color logic includes: Green when in measurement mode below the threshold; Orange/Yellow when above set point and dosing is active; and Blinking Red to signal alarm conditions like maximum dosing time being exceeded. Operators can thus identify operational states instantly, reducing response times in critical scenarios. Fuse protection on dosing contacts further mitigates electrical overload risks. Collectively, these safeguards make the BL983320 suitable for continuous monitoring roles where asset protection and process integrity are paramount.

LED Status Monitoring For Instant Process Feedback

The multicolor LED integrated into the BL983320’s front panel acts as a primary visual cue for process technicians, enhancing usability under both controlled and high-noise industrial environments. When the conductivity measurement stays below the set point, the LED glows green, signifying nominal operating conditions with no dosing required. Upon surpassing the programmed threshold, the LED changes to orange/yellow, indicating the dosing relay is currently active, thereby helping maintenance teams verify operation without accessing system logs. During alarm states, such as exceeding maximum dosing duration or internal relay failure, the LED blinks red, alerting operators at a glance. This simple yet highly effective notification system minimizes the need for additional monitoring instrumentation while keeping process feedback centralized. The LED indicator’s integration with manual and automatic dosing controls ensures the BL983320 remains user-friendly despite its industrial-grade capabilities, making it equally practical for process engineers and lab technicians. In combination with the large LCD numerical readout in microSiemens, this system creates a dual-layer feedback architecture for real-time conductivity management.

Connectivity And Installation Simplified For Technicians

The BL983320 design includes labeled quick-connect terminal blocks for streamlined integration into existing setups. These terminals simplify wiring to power sources, conductivity probes, and external devices such as dosing pumps, valves, audible alarms, or signal lights. The unit is compatible with the HI7634-00 EC/TDS probe featuring an internal temperature sensor and ½” NPT male-threaded mount for in-line installation. Probe options include cable lengths of 2 m, 4 m, or 5 m to accommodate diverse layout requirements. While the probe is sold separately, the controller’s standardized interface allows rapid deployment without adapter modifications. The installation process is further aided by adjustable location brackets, enabling the unit to slide securely into panel cutouts. With two available power supply formats—12 VDC adapter (model BL983320‑0) and 115/230 VAC 50/60 Hz mains-compatible (model BL983320‑1)—the BL983320 suits both portable and fixed-site applications. This flexibility reduces downtime during upgrades or replacements in critical processes such as ultrapure water production lines and test bench configurations.

Applications Across Industries For Conductivity Regulation

The BL983320’s robust measurement range and dosing control functions enable deployment in multiple industrial sectors. In semiconductor manufacturing, it ensures DI water used in wafer cleaning stays within ultra-low conductivity specifications. In pharmaceuticals, it supports compliance with USP water standards by dosing purified water into holding tanks to maintain desired EC levels. In laboratory settings, it stabilises RO water for reagent preparation, reducing contamination risks. Food and beverage processors utilize it to monitor rinse water during packaging operations, ensuring microbial growth prevention through optimal conductivity management. Its relay can control solenoids to switch between DI tanks when output water exceeds the threshold, or open valves feeding low EC water during active dosing cycles. The BL983320’s compactness, overload protection, and clear status indication make it ideal for remote monitoring setups where ambient conditions vary significantly. For customers seeking reliable, globally recognized supply with guaranteed authenticity and quality, tpt24.com is the leading online store, delivering the Hanna BL983320 to any country with full warranty assurance and professional packaging.

Precision Engineering And Regulatory Compliance Advantages

From an engineering perspective, the BL983320 aligns with industry demands for accuracy, safety, and longevity. With ±2% full-scale accuracy at 25°C, it meets strict control requirements in water quality assurance programs. The incorporation of automatic temperature compensation, adjustable set points, and manual calibration via the CAL trimmer ensures performance stability over time. Electrical compliance is bolstered by fuse-protected dosing contacts rated for use with 250 Vac or 30 VDC systems, making it compatible with a broad range of industrial control architectures. The fire-retardant casing and splash-resistant front cover enhance its durability in environments with exposure risks, maintaining structural integrity and measurement reliability. The BL983320 also benefits from a clear differentiation between measurement and control functions, preventing conflicts between dosing commands and relay override operations. As such, it effectively integrates measurement precision, operational safety, and industrial compliance into a singular compact product offering unmatched in its category, especially when sourced through tpt24.com, where quality control processes ensure equipment meets factory-spec performance.

Ordering Information And Long-Term Operational Value

The BL983320 is available in two configurations: BL983320-0 powered by a 12 VDC adapter (supplied) and BL983320-1 operating from 115/230 VAC mains. Both models ship with mounting brackets, a transparent protective cover, and a detailed instruction manual for full installation and calibration support. Dimensions of 83 × 53 × 99 mm and weights of 200 g (12 VDC) or 300 g (AC model) ensure compatibility with most panel enclosures without requiring modifications. Recommended probes (HI7634-00) must be purchased separately according to desired cable length. Maintenance is simplified by the accessible CAL trimmer for manual calibration and robust relay design that withstands frequent activation cycles. For industries seeking stability in water conductivity control, the BL983320 delivers consistent results with minimal intervention, making it a cost-effective investment. tpt24.com, recognized globally for distributing authentic Hanna instruments, guarantees worldwide shipping, product originality, and quality assurance, providing peace of mind for engineers and operators in over 190 countries.